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Definition of Nyctalopia
1. Noun. Inability to see clearly in dim light; due to a deficiency of vitamin A or to a retinal disorder.
Generic synonyms: Avitaminosis, Hypovitaminosis, Vision Defect, Visual Defect, Visual Disorder, Visual Impairment
Definition of Nyctalopia
1. n. A disease of the eye, in consequence of which the patient can see well in a faint light or at twilight, but is unable to see during the day or in a strong light; day blindness.
Definition of Nyctalopia
1. Noun. (medicine) The inability to see clearly in dim light; night blindness ¹
¹ Source: wiktionary.com
Definition of Nyctalopia
1. [n -S]
Medical Definition of Nyctalopia
1. Night blindness or difficulty in seeing at night. Symptom of vitamin A deficiency. (27 Sep 1997)
Lexicographical Neighbors of Nyctalopia
Literary usage of Nyctalopia
Below you will find example usage of this term as found in modern and/or classical literature:
1. The Medical Times and Gazette (1866)
"The fourth case was that of a girl, aged 10 years, healthy in appearance, but
with deafness and nyctalopia lue her younger sister. ..."
2. The New American Cyclopaedia: A Popular Dictionary of General Knowledge by George Ripley, Charles Anderson Dana (1861)
"nyctalopia has been used in different acceptations by various authors, sometimes
as signifying blindness occurring only at night, at others as occurring in ..."
3. Edinburgh Medical and Surgical Journal (1814)
"I" FIND it observed by different authors, that nyctalopia, or night- -*- blindness,
... nyctalopia, I believe, prevails in all tropical countries. ..."
4. The Half-yearly Abstract of the Medical Sciences: Being a Digest of British edited by William Harcourt Ranking, Charles Bland Radcliffe, William Dommett Stone (1867)
"nyctalopia, with Partial Deafness, in Five Children of the same Family. By THOMAS
LAYCOCK, MD, Professor of the Practice of Medicine and Clinical Medicine ..."
5. A Treatise on the Diseases of the Eye by William Lawrence (1833)
"Day-blindness ; nyctalopia.— The opposite state to the former, or blindness during
the day, is called nyctalopia. There are many states of the organ in ..."
6. Anomalies and curiosities of medicine by George Milbry Gould, Walter Lytle Pyle (1901)
"nyctalopia etymologically means night-blindness, but the general usage, making
the term mean night-vision, is so strongly intrenched that it is u- and ..."
7. Edinburgh Medical Journal (1883)
"It must be admitted that the evidence is all in favour of nyctalopia originally
being used to designate the state of night-blindness, and unless any strong ..."
8. The American Cyclopaedia: A Popular Dictionary of General Knowledge by Charles Anderson Dana (1875)
"... day blindness, has been applied to a defect of vision the opposite to nyctalopia.
Beyond the photophobia common to those who have been long habituated ..."
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